Go Back   986 Forum - for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Boxster General Discussions

Reply
 
LinkBack Thread Tools Display Modes
Old 01-02-2015, 10:48 AM   #1
There Is No Substitute.
 
rick3000's Avatar
 
Join Date: May 2007
Location: West Coast
Posts: 3,141
Garage
Headlight Questions - Which Bulbs? PIAA, Osram, Philips

Hi Everyone,

My low beams have been dim to the point of uselessness for a while. I decided to sort them out today. Opened up my year old new-to-me clears and no rust or connection issues.

I then discovered all four H7 55W bulbs are PIAA H7 XTreme Plus bulbs (about $35 each). I swapped the high beam and low beam H7 bulbs. Problem solved for the lows, but something about becoming high beams caused both of the previously dim H7's to fail instantly. (I was hoping that would happen to confirm they where on they way out.)

I have now swapped the highs out with Philips H7's from my old set of amber headlights.

Two questions:
Does anyone have experience with full strength PIAA H7's? I am concerned about causing ellowing/burning/bubbling?? They are H7 55W.

I also have a set of Osram H7's from my old amber set. Should I use those instead of the Philips or PIAA? Again, my primary concern is to avoid yellowing/burning/bubbling?

Thanks,
-Rick

__________________
1999 Ocean Blue Metallic Boxster - blueboxster.com
rick3000 is offline   Reply With Quote
Old 01-02-2015, 11:29 AM   #2
Custom User Title Here
 
particlewave's Avatar
 
Join Date: Mar 2012
Location: WA
Posts: 6,087
Garage
PIAA =




Last edited by particlewave; 01-02-2015 at 11:36 AM.
particlewave is offline   Reply With Quote
Old 01-02-2015, 11:31 AM   #3
There Is No Substitute.
 
rick3000's Avatar
 
Join Date: May 2007
Location: West Coast
Posts: 3,141
Garage
Not arguing, but those bulbs have a different color scheme. Silver tip, blue body versus the blue tip, clear body. Could that be a factor? I may swap the PIAA's out.

Thanks particlewave!
__________________
1999 Ocean Blue Metallic Boxster - blueboxster.com
rick3000 is offline   Reply With Quote
Old 01-02-2015, 11:36 AM   #4
Custom User Title Here
 
particlewave's Avatar
 
Join Date: Mar 2012
Location: WA
Posts: 6,087
Garage
Yeah, I don't have a pic of bubbled PIAA, but same problem. I've even seen burning with standard Philips. Osram seems to have a better track record, but I'm not 100% sure that there is any solid correlation.

Best advice I can give is to avoid any of those blue "HID white light" or just "white light" bulbs.

I don't think blame can be placed solely on the bulb. Bosch dropped the ball a bit with the material of the inner lens.

Last edited by particlewave; 01-02-2015 at 11:38 AM.
particlewave is offline   Reply With Quote
Old 01-02-2015, 04:54 PM   #5
There Is No Substitute.
 
rick3000's Avatar
 
Join Date: May 2007
Location: West Coast
Posts: 3,141
Garage
Oh great particlewave/headlight know-it-all, thanks for the advice!

I swapped in the Osram's I had for the low beams. I'm not willing to risk it, despite the very nice white light the PIAA's generate. I have the Philips in the high beams, but I maybe use my high beams for about an hour a year.

The PIAA's have been shelved. Maybe if the 986 becomes a weekend warrior in the very distant future, and I won't ever use the headlights more than 20-30 minutes at a time, I will swap them in.
__________________
1999 Ocean Blue Metallic Boxster - blueboxster.com
rick3000 is offline   Reply With Quote
Old 01-02-2015, 04:56 PM   #6
Registered User
 
Fintro11's Avatar
 
Join Date: Jun 2013
Location: Nanaimo, Vancouver Island, British Columbia, Canada
Posts: 893
Quote:
Originally Posted by particlewave View Post
PIAA =





How hard would it be to replace those lenses? Can you get them in glass? Mine are just slightly burnt, you can barely notice it.

Any recommendations for bulbs?
Fintro11 is offline   Reply With Quote
Old 01-02-2015, 09:24 PM   #7
Registered User
 
Nine8Six's Avatar
 
Join Date: Sep 2013
Location: Montreal, QC. (currently expat to Shanghai)
Posts: 3,216
thread hijack (sorry Rick!)

Exterminatethehallogen.com.cn







__________________
______________________________
'97 Boxster base model 2.5L, Guards Red/Tan leather, with a new but old Alpine am/fm radio.
Nine8Six is offline   Reply With Quote
Old 01-02-2015, 09:30 PM   #8
Registered User
 
Nine8Six's Avatar
 
Join Date: Sep 2013
Location: Montreal, QC. (currently expat to Shanghai)
Posts: 3,216


Thankeyou - my crisis is over, carry on
__________________
______________________________
'97 Boxster base model 2.5L, Guards Red/Tan leather, with a new but old Alpine am/fm radio.
Nine8Six is offline   Reply With Quote
Old 01-03-2015, 02:34 AM   #9
Registered User
 
Join Date: Nov 2014
Location: The Garden State
Posts: 6
Thumbs up The Solution

TMStewart is offline   Reply With Quote
Old 01-03-2015, 03:44 AM   #10
There Is No Substitute.
 
rick3000's Avatar
 
Join Date: May 2007
Location: West Coast
Posts: 3,141
Garage
Those have been on my wishlist for this year for a while.
__________________
1999 Ocean Blue Metallic Boxster - blueboxster.com

Last edited by rick3000; 01-03-2015 at 03:50 AM.
rick3000 is offline   Reply With Quote
Old 01-03-2015, 01:24 PM   #11
Registered User
 
Fintro11's Avatar
 
Join Date: Jun 2013
Location: Nanaimo, Vancouver Island, British Columbia, Canada
Posts: 893
Quote:
Originally Posted by Nine8Six View Post
Exterminatethehallogen.com.cn







I need to find a extra set of headlights first just incase i screw up installing
Fintro11 is offline   Reply With Quote
Old 01-03-2015, 03:06 PM   #12
Registered User
 
Nine8Six's Avatar
 
Join Date: Sep 2013
Location: Montreal, QC. (currently expat to Shanghai)
Posts: 3,216
Quote:
Originally Posted by Fintro11 View Post
I need to find a extra set of headlights first just incase i screw up installing
You buy a headlight if you screw up, not before Spares are often for sale everywhere on ebay, in Europe, even on the Chinese ecoms for <$200 each in most case

There are 3 things that can go wrong when doing one of those retrofit:
  1. You remove the headlight from your car and drop/slam it on the asphalt for some weird reason (e.g. 2drunk/2stone, filthy hands, etc)
  2. While pre-heating the headlight (to soften the silicon), you get distracted by your favourite TV show and forget it in the oven for two hours.
  3. You bore the H7 socket size from its original 21mm size up to let's say "78mm", instead of the required 23mm to fit the projector
- I'm sure most of us are careful when handling Porsche headlights so rule out #1
- Although #2 happened to a 911 owner (true story), I'm sure you can set yourself a timer for 15min to avoid that embarrassment
- I'd be surprised to hear if anyone ever bored the socket hole bigger than it needs to be (e.g. ambitious installer lol)

....and if somehow you can manage to break that porsche polycarbonate lens, or whatever secret material it is made of, I seriously need to see a picture of your muscles mate. Try LOL
__________________
______________________________
'97 Boxster base model 2.5L, Guards Red/Tan leather, with a new but old Alpine am/fm radio.

Last edited by Nine8Six; 01-03-2015 at 03:19 PM.
Nine8Six is offline   Reply With Quote
Old 01-03-2015, 03:16 PM   #13
Registered User
 
Nine8Six's Avatar
 
Join Date: Sep 2013
Location: Montreal, QC. (currently expat to Shanghai)
Posts: 3,216
Rick

Give the HELLA H7 a go.... if you are not sure about the other brands. Make sure the glass is surgically clean (use alcohol or acetone) and that will be just fine.

Leave a tad of finger grease or any residue on them and they'll generate almost twice more heat. Possibly burning the outer lens... if yours are still intact!
__________________
______________________________
'97 Boxster base model 2.5L, Guards Red/Tan leather, with a new but old Alpine am/fm radio.
Nine8Six is offline   Reply With Quote
Old 01-05-2015, 05:58 AM   #14
Registered User
 
b55er's Avatar
 
Join Date: Jan 2011
Location: Bay Area, CA
Posts: 42
I have this same question too.

I believe I have the original OEM bulbs in my '98 base 986. My headlight assemblies are "like new" with no yellowing, scratches, etc. I keep them polished and protected.

I find my headlamps lacking and not as good as other cars.

Is it more of thermals or UV that causes the breakdown on these lenses?

Spending sleepless nights on the internets revealed that we should be using H7u bulbs which have a UV rating designed for polycarbonate headlight assemblies.

So, I would like to upgrade my bulbs from 1998 stock. I do not want to brown my lenses. I want to stay with the stock headlamps with minimal cost, so it will be a H7. My question is.. which one?

I discovered that the "night breaker" OSRAM. Various websites including Amazon state they are "UV safe" for plastic lenses.

NIGHT BREAKER UNLIMITED | Halogen headlight lamps... | OSRAM
b55er is offline   Reply With Quote
Old 01-05-2015, 06:20 AM   #15
Registered User
 
Nine8Six's Avatar
 
Join Date: Sep 2013
Location: Montreal, QC. (currently expat to Shanghai)
Posts: 3,216
Quote:
Originally Posted by b55er View Post
Spending sleepless nights on the internets revealed that we should be using H7u bulbs which have a UV rating designed for polycarbonate headlight assemblies.
I don't think the outter reflector/lens have been manufactured in PC. Looks made out of PET or worst, no idea. Maybe something went completely wrong in the design/simulation/r&d process.... nobody knows for sure. The yellowing (burning in some case) issue is pretty weird that is for sure

Not a light wavelength or spectrum vs material expert at all here, but find it interesting to hear that you found a manufacturer adapting their bulbs (coatings?) for max performance. Never read that before, finally lol
__________________
______________________________
'97 Boxster base model 2.5L, Guards Red/Tan leather, with a new but old Alpine am/fm radio.
Nine8Six is offline   Reply With Quote
Old 01-05-2015, 06:26 AM   #16
Registered User
 
Nine8Six's Avatar
 
Join Date: Sep 2013
Location: Montreal, QC. (currently expat to Shanghai)
Posts: 3,216


Thanks for making it easy for us to find btw UV filter technology | Professional knowledge | OSRAM

Nice find, thx for that
__________________
______________________________
'97 Boxster base model 2.5L, Guards Red/Tan leather, with a new but old Alpine am/fm radio.
Nine8Six is offline   Reply With Quote
Old 03-01-2015, 06:15 PM   #17
Registered User
 
gomarlins3's Avatar
 
Join Date: Jan 2012
Location: Kuna Idaho
Posts: 236
Did we determine if these were a good alternative to increase out light output? I am not happy with how far up the road my lights shine at night.

Quote:
Originally Posted by b55er View Post
I have this same question too.

I believe I have the original OEM bulbs in my '98 base 986. My headlight assemblies are "like new" with no yellowing, scratches, etc. I keep them polished and protected.

I find my headlamps lacking and not as good as other cars.

Is it more of thermals or UV that causes the breakdown on these lenses?

Spending sleepless nights on the internets revealed that we should be using H7u bulbs which have a UV rating designed for polycarbonate headlight assemblies.

So, I would like to upgrade my bulbs from 1998 stock. I do not want to brown my lenses. I want to stay with the stock headlamps with minimal cost, so it will be a H7. My question is.. which one?

I discovered that the "night breaker" OSRAM. Various websites including Amazon state they are "UV safe" for plastic lenses.

NIGHT BREAKER UNLIMITED | Halogen headlight lamps... | OSRAM
gomarlins3 is offline   Reply With Quote
Old 12-07-2015, 12:46 PM   #18
Registered User
 
Join Date: Aug 2015
Location: Atlanta
Posts: 13
I'm resurrecting this thread with a simple question: Did the yellowing occur with the original headlamps, or was it always the result of folks retrofitting their headlamps with different bulbs? I ask because I'm looking at replacing my yellowed headlamps with stock ones, but certainly don't want any risk of repeating the yellowing.

zehutiman is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -8. The time now is 11:02 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page